Coal-leveling gate



2 SHEETS-SHEET 2- Mar; 12, 1922.

J. DEVER.

60M. LEVELING GATE. FILED SEPT i3; 92!

v INVENTOR (Ema? fl'ver ,BY1 O fATTORNEYS Patented Mar. 13, 1923.

JAAMES' DEVER, or SIQUX CITY, IOWA.

ooAri-Lnvnmne cnrn.

Application filed September 13,1921, S"eria1.Nol500,338;

To all whom it may concern: p

Be it known that I, J AMEs 'DEVER, a, citizen of the United 'States,residing at Sioux City, in the county ofVVoodbury and State of Iowa, have invented. a new and useful Construction of Coal-Leveling Gates, of which the following is a specification.

This invention, which generally relates to improvements in furnace grates, is more especially designed for use in connection wit-h that type of endless travelling grates known as Green chain Fgrat'e dstoker, in which the grate bars move inwardly toward the interior of the furnace, and afford support for the'layer offuel constantly fedt-o the. outer or receiving end of the grate, and thereby moved into the furnace during the progress of combustion.

My invention is especially directed to improvements in the usual sliding fuel door or gate mechanism that is located over the feed opening of'the furnace and with which is connected means for effecting vertical adjustment thereof to' control the thickness of the fuel as it is beingsupplied fromthe hopper or stoker cooperativetherewith.

Primarily my invention seeks to -provide an improved coal leveling gate whose construction is so designed thatthe said gate is absolutely unburnable and one which will not warp from the" heat or fire.

My invention. also has" for its purpose'to provide a gate of thecharacter stated, capable of such ready adjustment, relatively to the fuel infeed' passage to the-furnace, that when the furnace is fired up and thoroughly heated throughout, the coal ignites as soon as it passes under the inside wall of the gate, and it also operates to effect a' perfect level of the coal across the grates as the fuel is carried inward thereon.

With other minor objects iii view that will "slstsof an I-beam 7, practice, seven and become'apparent as the detailed description of my invention'is' proceeded with, my said invention embodies, in a coal leveling gate of the kind stated the peculiar arrangement and novel combination of parts fully stated in the following description, specifically pointed out in the appended claims 1 and illustrated in the accompanying drawing, in which: V

Figure 1 is a central vertical section of my improved coal level-ing' gate, so much of an endless traveling furnace grate construction, the furnace and the fuel feed hopper being shown as necessary to" illustrate a practical application of my invention. 7 Y F'gure 2 is a detail section taken on the line 2-2 of Figure 1, looking in'the direction of the arrow, the gate structure being in elevation, the movable grate portions being omitted. I

.Figure3 is a perspective View 'of vaportion of my improved construction of leveling gate. I V v Figures 4: and 5 are crossse'ctions thereof taken respectively on the lines and ,55 of Figure 3.. Y Figure 6 is a detailviewof the I-beam. Figure 7 is a detail perspective view of one of the end tiles of the: outside course of tiles of the gate body. i l

- In the drawings, 1"d-esignatesa portion of one of the side walls of the furnace, 2' a portion of the guide bars which are. of the continuous ring or loop type 'and'3. the grate bars; -4:.'.4:' T-Cl6Slg]1a-t6S transverse rods :to which the grate bars are attached and which carry the friction rollers-2O (see Figure-12).. 5is the feed hopper at'the forward end-of My Invention especially relates to pthe I .the furnace from which the fuel'is'taken Y proved sliding door: or gate construction that is'locatedovfer the feed openingfiofthe furnacewith the lower edge "thereof, a. short distance above the grate: and which, as l1ere+ inafter. stated, iswinade; adjustable to control the thickness of thelayer of fuel :as ithe said fuel is carried through :the' said feed open- The door or gate: of my construction con one-half feetlong, such length iaccommodate ing a stoker'eigh't feet wide; g I I CooperativeWith-the beani 7. are an out side .andran' inside icoursefof tiling, the said courses being designated respectively 8 and 9. 'Eachcoursej of tiling is composed of-tile blocks, each of said blocks l being preferably twelve inches high and twenty-four inches long and the said blocks are closely placedv end to endftowconstitutethew'outer and inner faces of a gate: eight feet long, the said blocks being held in rigid relation-thy" reason of their attachment to the single I-beam 7, and with each other, as will be presently further explained. 7

The inside course of tiles 9 is fitted tightly up against the body or web of the I-beam and the said course of tiles 9 is supported upon and is connected with the said I-beam but it is spaced one inch, more or less, from the body of the said beam and the outside course of tile lining 8.

As is best shown in Figures 41: and 5, the outside base portion at the bottom of the beam 7 is cut away to form a narrow flange 80 along the full length of the beam 7 and the said flange in practice, extends a suHicient width, preferably onehalf of an inch, to constitute a support for fitting within the horizontal bearing grooves 81 in that side of the tile members 8 which face and bear against the beam 7 Each tile block of the inner series has a horizontal bearing groove 90 to receive the outer or front portion of the wide base 71 of the beam 7 the said portion, in practice, extending one and one-half inches from 1 the web of the beam.

The tile lining 8 is held one inch away from the tile lining 9 by a series of tubular spacers 10, and the whole structure is rigidly connected by a series of stay rods 11 that pass transversely through both the inner and outer tile blocks, and the spacers 10;

An upper and a lower set of tie rods are rovided along the entire series of tile blocks, and the upper set passes through apertures 7 5 in the web of the I-beam.

Some of the rods 11 pass through the liner blocks 9 through the I-beam and the other liner blocks 8, as is best shown in Fi ures t and 5, by reference to which it will be observed the rod heads are buried one inch or more or less within sockets 95 in the outer face of the blocks 9, and the said heads are covered by. fire-clay or asbestos 96. The outer ends of the rods 11 extend into sockets 81 in the front liner blocks 8 and are made fast by clamp nuts 85.

The tile blocks, in practice, are preferably five inches thick, and each end tile of the outside course of the tiling has a vertical cut out portion 83 that merges with an undercut horizontal socket 84, such formation of the end ones of the outside course of tiles allowing'for their ready connection with the casting or hanger members 12, by which the ate is raised or lowered, and which join with the usual raising and lowering means provided in the top of chain grate stokers stated, and generally indicated at 13-13 of Figures 1 and 2 of the drawings.

14 designates an asbestos joint or fillin which fits the space between the separate inner and outercourse of the tile.

From the foregoing description, taken in connection with the accompanying drawings,

the complete construction, the manner of its application and use and the advantages of my coal gate will be readily apparent to those familiar with the manufacture and use of endless chain grate stokers.

By forming the gate of the body having an Lbeam as the base, and with the inner and outer faces composed of a series of tile blocks that are substantially rigidly attached to the I-beam and to each other, the gate is possessed of the required strength and durability, and since no metal parts are in direct contact with the fuel and the heat at the fuel opening to the furnace, the feed of coal maybe maintained absolutely level across the grate and the danger of the gate burning or warping reduced to the minimum.

What I claim is I 1. In a furnace provided with' a fuel opening, the combination with an endless chain grate forming the floor of the said opening; of a gate arranged to control the passage of fuel through the said opening, the said gate comprising a body composed of an I-beam core, an inner course of tiling blocks held in close end to end relation, the said inner course of tiling blocks having a horizontal groove along one side for interlocking with the base flange at the corresponding side of the I-beam, an outer course of tile blocks heldin close endwise relation and having a longitudinal groove for engaging the corresponding edge of the base flange, of the beam, spacers interposed between the beam and an adjacent course of tiling, and cross tie rods that pass through the two courses of tiling, some of the said tierods passing through the web of the I- beam. p

2. In a furnace provided with a fuel feed opening, the combination with an endless chain grate forming the floorof the said opening; of a gate arranged to control the passage of fuel through the said: opening, the said gate comprising a bodyhcomposed of an I-beam, an outer courseof tiling blocks held in close end to end relation, the said course of tiling blocks having a horizontal groove for interlocking with the base flange on the adjacent side of the beam, an inner course of tiling blocks held in close endwise relation and having a longitudinal groove for engaging the adjacent edge of the base flange of the beam, spacers in'posi tion between the outer course of tiling and the inner course, cross tie rods that pass through the inner and outer courses of tiling, some of the said tie rods passing through the web of the I-beam, the outer course of tiling having sockets, and means for raising and lowering the gates including'hangers for engaging the sockets in the outer course of tiling.

JAMES DEVER. 

